Vulnerability details
CVE-2026-64018
Linux Linux
net: mana: validate rx_req_idx to prevent out-of-bounds array access
CVSS 3.1
9.3Critical
Official description
In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access In mana_hwc_rx_event_handler(), rx_req_idx is derived from sge->address in DMA-coherent memory. In Confidential VMs (SEV-SNP/TDX), this memory is shared unencrypted and HW can modify WQE contents at any time. No bounds check exists on rx_req_idx, which can lead to an out-of-bounds access into reqs[]. Add bounds check on rx_req_idx in mana_hwc_rx_event_handler() before using it to index the reqs[] array.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 5.13 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < ff1d5af207bcea857d45fe81505f1bc4b29eaef0 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < 01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < 763a372d344fb12fae566d36ddb46e92454ad58c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < 5ddc715324badd7f2641bc177db1d027b402adae | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < 355e9f2b2a7887ca38100127989af3e422ba71d0 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < b809d0409991b75a6cff846a5ac27c3062953f84 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f ≤ v < fa627a5eaa83fc0261f44ef3769693b886ca6e27 | CVEProject cvelistV5 (CNA) |
References and advisories
7- https://git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae
- https://git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0
- https://git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01
- https://git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c
- https://git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27
- https://git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0
- https://git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84
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Details
- Published
- 2026-07-19
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.14%
Probability of exploitation in 30 days
3.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-125Out-of-bounds Read